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Finding the Fourth Proportional to 357,179.64, 535,396.84 and 120,440.92

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Solution

The fourth proportional to 357,179.64, 535,396.84 and 120,440.92 is: 180,535.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,179.64 : 535,396.84 = 120,440.92 : x
  2. Step 2: Convert to fraction form
    357,179.64/535,396.84 = 120,440.92/x
  3. Step 3: Cross multiply
    357,179.64x = 535,396.84 × 120,440.92
  4. Step 4: Simplify right side
    357,179.64x = 64,483,687,974.69
  5. Step 5: Solve for x
    x = 64,483,687,974.69/357,179.64
  6. Step 6: Final answer
    x = 180,535.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.